Checking out hitpoints heavy gear atm where I try to keep the defensive stats at what I understand to be the "sweet point of 20-50-50" and from there went with endurance. So far no complaints from the healers, not sure though if I prefer this to higher shield / absorb though. Gear is BH/Campaign with 27 armour mods
Stats (buffed, exotech)
endurance: 2539
aim: 1691
hp: 28170
armour: 8994
Damage red: 54.44
Defence: 20.26
Shield: 52.52
absorbtion: 50.68